Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad740d9a1279f5dc…

MALICIOUS

PDF

92.7 KB Created: 2021-05-19 14:25:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: 4b761860a6332aaa986f2ec63f2227b1 SHA-1: 15b532d4ba0a2e2d4529f14ff645e471e1c6c6a6 SHA-256: ad740d9a1279f5dc25f0727ccfcaa9ce0f1ce421c0ceeecf803a26ba8871d392
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://resalured.ru/strik?utm_term=is+gigi+from+jerseylicious+still+with+frankie PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4459027/normal_6007b44b935ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366313/normal_5fd64aa7c7b3c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426062/normal_600155599ef16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409840/normal_60303c269cf16.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465267/normal_605517a9692f2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413462/normal_606060e14597e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408187/normal_5fe84b853c34c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/3a73cbf5-4b14-44c9-bc02-850c8ef0a80e/how_to_program_a_hunter_sprinkler_controller.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/598f43df-b2e3-42d1-b759-8b458ba97efb/polebetabapubogafetesedo.pdfIn PDF document text
    • https://s3.amazonaws.com/wefadep/bixejivuradufitaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b0fa000b-073e-4924-87a6-4dfd1c66b259/bivejulupawetagimigogew.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4bac577e-a7dd-4a7b-a38c-98bc2bde4bbb/37308829428.pdfIn PDF document text
    • https://s3.amazonaws.com/jutenojamega/john_deere_gator_parts_lookup.pdfIn PDF document text
    • https://s3.amazonaws.com/zamemigojat/23842945925.pdfIn PDF document text
    • https://s3.amazonaws.com/toniseligiwuzux/which_hp_laptops_have_docking_stations.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/690e6fc6-13e9-4786-9c87-d276bba3127f/dell_latitude_e7450_wifi_driver_for_windows_7_64_bit.pdfIn PDF document text
    • https://s3.amazonaws.com/pidufozu/brahmotsavam_songs_naa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1fa032d3-2d30-49e2-8b01-62217a68648f/fisab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/87fd29f3-4fda-4ec0-9aa3-1c2012013c84/relewuwilixiti.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/38cdee02-bae7-42d7-942f-83c2aca4c525/nowekukuzamopagimevepune.pdfIn PDF document text
    • https://s3.amazonaws.com/mekonulegipero/tudabobanibusunata.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000129aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x129AA 5564 bytes
SHA-256: 2eee4a13f0679f8904b014d663637744a1286b178ac1cc4cbe56895b34df88ad
font_01_sfnt_off00013c8e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13C8E 11384 bytes
SHA-256: f3140ffc9ce4a12ca08f78e645a01a41f6e731a3c59e3845b7c321657280a3f7

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